Reducing-body



W. A. L-EDDELL.

REDUCING BODY.

APPLICATION FILED MAYH, 1920.

! t! 151111Jill/1111111111111Ill/111I111! 111111 Patented Dec. 6, 1921.

WILLIAM A. LEDDELL, or DENVER, COLORADO, nssrsnoa TO THE INE AND SMELTERSUPPLY COMPANY, or DENVER, cononano, A CORPORATION on COLORADO.

REDUCING-BODY.

Specification of Letters Patent. 7

Patented Dec. e, 1921..

Application filed Ma y 11, 1920. Serial No. 380,482.

To all whom it may concern Be it known that I, WILLIAM A. LnoDnLL, acitizen of the United States, and a resldent of Denver, county ofDenver, and State of Colorado, have invented certain new and use fulImprovements in Reducing Bodies, of which the following is aspecification.

My invention relates to reducing bodles for use in ore-reducing millsand the like, wherein the material is reduced to the desired degree byconfining the same, together with the reducing bodies, within a rotatingdrum or container.

Reducing bodies of various kinds have been used, such as steel balls,Danish pebbles and rods, and it is to the latter that the presentinvention is directed.

In order that the advantage of the construction of my reducing body maybe appreciated, it may here be mentioned that one difficulty with therods as now constructed is that after they have worn down somewhat theyoften become twisted and the mill must be shut down to remove them.This, of course, is annoying and causes considerable loss of time.

The reducing body forming the subjectmatter of the present invention hasbeen illustrated in the accompanying drawings,

Figures 1 and 2 showing a preferred form; while Figs. 3 and 4 show amodification.

Referring to the reducing body of Figs. 1 and 2, it will be seen thatthe same comprises a tube 1 which is preferably of a high-grade steel,this tube containing a number of plugs 2 which may be of a cheap gradeof steel, these plugs being arranged longitudinally of the tube andfrictionally held in place therein in this embodiment of my invention byshrinking the tube upon the plugs which may be done readily by merelyheating the tube, filling the same with plugs and then allowin the tubeto cool.

ith this construction after a certain amount of wear, the outer tubewill break at the junction of the ends of the plugs and these shortpieces will float out of the mill without causing any interruptions inthe operation thereof or necessitating shutting down of the mill.

ing body for use in mills tube shrunk upon said plugs within the tube.

In the embodiment of Figs. 3 and 4 I have shown a similar construction,the reducing body of this construction comprising a tube 3 containingplugs l4, the tube in this instance, after being filled with the plugs,being pressed or hammered on opposite sides thereof so as to place.

It will be observed from the foregoing that the junction of the plugsemployed in the present invention constitute fractural zones at which.the body will fracture in time, thereby effectually eliminating dangerof the bodies kinking and becoming'entangled in the mill, thisconstruction providing a further advantage in that the short lengths ofrod or reducing body after the reducing body with the operation thereof.

It is to be understood that I am not to be limited .to the preciseconstruction herein illustrated inasmuch as in its broadest aspects theinvention is directed to'a reducing body having fractural zones whichobviously might be accomplished'in ways other than those here describedin detail.

What I claim is:

1. As an article of manufacture, a reducing body for use in millscomprising a tube containing plugs arranged longitudinally of the tubeand held therein. a

2. As an article of manufacture, a reduccomprising a tube containingplugs arranged longitudinally of the tube and secured thereto. 3. As anarticle of manufacture, a reducmg body for use in mills comprising atube contalning plugs arranged longitudinally of the tube andfrictionally held thereto.

4. As an article of manufacture, a reducingbody for use in millscomprising a plurality of plugs arranged end to end and a plugs toretain I the This specification signed this 5th dayof May, 1920.

WILLIAM A. LEDDELL,

frictionally hold the plugs in

